Coil winding machine



March 5, 1940. J. E. PAPIN El AL COIL WINDING MACHINE Filed July 31. 1939 2 Sheets-Sheet 1 INVENTORS JOS.E.PAPIN H. H. BLACK ATTORNEY J. E. PAPIN ET AL ,618

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Filed July 31. 1939 2 Sheets-Sheet 2 March 5, 1940.

INVENTORS JOS.E.PAP|N H.H. BLACK A ORNEY MMMMMMW W% Patented Mar. 5, 194C UNITED STATES PATENT OFFICE Black, Overland, Mo., assignors to Wagner Electric Corporation, St. Louis, Mo., a corporation oi Delaware Application July 31, 1939, Serial No. 287,492

9 Claims.

Our invention relates to a coil winding machine and particularly to a machine for winding stator coils of electric machines.

One object of our invention is to provide a coil winding machine of simple construction, by means of which stator coils may be rapidly and inexpensively formed.

Another object of our invention is to provide improved means to adapt the machine to wind various numbers of coils as well as to vary the size of the coils both as to length and number of turns.

In the accompanying drawings, which illustrate one form of coil winding machine made in accordance with our invention, Figure 1 is a front elevation; Figure 2 is an enlarged fragmentary end view; Figure 3 is an enlarged section taken on the line' 3-3 of Figure 2; Figure 4 is a section taken on the line 4-4 of Figure 3; Figure 5 is a view similar to Figure 4, but showing the parts in a different position; Figure 6 is a section taken on the line 66 of Figure 2; Figure 7 is an enlarged section taken on the line 1-1 of Figure 2; Figure 8 is a section taken on the line 8-8 of Figure 2; and Figure 9 is a semidiagrammatic view showing the manner of winding the coils.

The frame I 0 of the machine contains the gearing (not shown) for driving a horizontal shaft Non-rotatably mounted on the shaft is a block |2. Secured to one face of the block is a rail l3. Passing through the block is a rod H which rotates in the block but is prevented from longitudinal movement by collars l5. One end of the rod is provided with right hand threads and the other with left hand threads. These threads engage with internal threads in a pair of sliding blocks iii. The rod may be rotated by means of a crank-arm or other tool applied to the squared end ll of the rod to move the blocks l6 toward or away from each other to vary the length of the coils formed. The rail is preferably provided with a scale l8 cooperating with an index mark on one of the blocks It to indicate the length of the coil.

Each of the blocks I6 is provided with a tubular extension l9. Mounted in this extension is a headed plug 20 (Figures 3 and 4) having an eccentric circular aperture 2|. Extending into each of the apertures 2| is the end of a cylindrical bar 22. Mounted on the bars 22 are a number of spacing collars 23. The collars are adjustable along the bar by any suitable means, such as set screws 24. The inner ends of each of the bars 22 is provided with a circumferential groove 25 tance for said setting or vice versa. During the 10 winding operation these apertures, together with the bars 22 carried thereby, should be maintained at the maximum distance apart. If desired, positive locking means may be employed for this purpose. We have found, however, that this result 15 may be satisfactorily secured by making a tight fit between the plug and the. extension so that the parts are held by friction. This simplifies both the construction and the operation of the device. by means of a handle 28 (Figure l) engaging with radial holes 29 (Figure 2) in the plugs. To prevent the outer ends of the bars 22 from being sprung toward each other by the tension of the wire, we provide a turnbuckle brace comprising an internally threaded sleeve 30 engaging rods 3| provided with right and left hand threads and terminating in annular members 32 adapted to fit over the ends of the bars 22. carried by block l2.

In using our coil winding machine the rod l4 is rotated by a suitable tool applied to the squared end until the proper length of coil is indicated on the scale l8. The plugs 20 are turned to move the apertures 2| to their minimum distance apart. This will cause the pins 26 to clear the apertures 2| (as shown in Figure 4) and so permit the insertion of bars 22. It will be understood that before the insertion of the bars, the

thereto to wind the number of coils desired and that such collars are spaced to provide the proper width of coil. After the bars are inserted in the plugs the latter are rotated to move the bars to their maximum distance apart. This will cause sleeve 30 is turned to tighten the members against the rods to lock the brace in position. The end of the wire 34 is now secured to the pin 33 and shaft driven from any suitable source, as the driving belt 35. As the shaft with its attached parts is rotated, the wire is fed into the 55 The plugs are rotated inthe extensions A pin 33 is proper number of spacing collars 23 are applied 4 spaces formed by the collars 23, being carried from one space to another as each is successively filed. After all the coils are completed, sleeve 30 is rotated to loosen the brace which may now be removed from the rods. The plugs 20 are now rotated to bring the rods to their minimum distance apart. This releases the tension on the coils and at the same time disengagcs pins 26 from grooves so that the rods may be removed from the plugs and the coils detached therefrom.

Having fully described our invention, what we claim as new and desire to secure by Letters Patent of the United States is:

1. In a coil winding machine, the combination with a shaft, of means for driving said shaft, an arm carried by said shaft and projecting at opposite sides thereof, a sliding member carried on said arm at each side of the shaft, means for simultaneously moving said members toward and away from each other, and coil receiving forms carried by said members.

2. In a coil winding machine, the combination with a shaft, of means for driving said shaft, an arm carried by said shaft and projecting at opposite sides thereof, a sliding member carried on saidarm at each side of the shaft, means including a rotatable rod having right and left hand threads for simultaneously moving said members toward and away from each other, and coil receiving forms carried by said members.

3. In a coil winding machine, the combination with a shaft, of means for driving said shaft, an arm carried by said shaft and projecting at opposite sides thereof, a sliding member carried on said arm at each side of the shaft, means for simultaneously moving said, members toward and away from each other, and coil receiving forms carried by said members, said coil receiving forms each comprising a bar having a plurality of spacing collars longitudinally adjustable thereon.

4. In a coil winding machine, the combination with a shaft, of means for driving said shaft, an arm carried by said shaft and projecting at opposite sides thereof, a sliding member carried on said arm at each side of the shaft, means for simultaneously moving said members toward and away from each other, coil receiving forms carried by said members, and means for moving said forms toward each other independently of said members to release tension on the coils carried thereby.

5. In a coil winding machine, the combination with a shaft, of means for driving said shaft, an arm carried by said shaft and projecting at opposite sides thereof, a sliding member carried on said arm at each side of the shaft, means for simultaneously moving said members toward and away from each other, coil receiving forms carried by said members, each of said forms comprising a detachable bar having a plurality of spacing collars longitudinally adjustable thereon, means for moving said bars toward and away from each other independently of said members to control the tension of coils thereon, said means also functioning to lock and release the bars.

6. In a coil winding machine, the combination with a shaft, of means for driving said shaft, a block carried by said shaft, a rail carried by said block and projecting at opposite sides thereof, a rod rotatable in said block and extending adjacent said rail, said rod being provided with right and left hand threads, a pair of sliding blocks arranged'one at each side of the shaft and cooperating with the rail and rod, whereby rotation of the rod simultaneously moves said sliding blocks toward and away from each other, and coil receiving forms carried by said sliding blocks.

7.- In a coil winding machine, the combination with a shaft, of means for driving said shaft, a block carried by said shaft, a rail carried by said block and projecting at opposite sides thereof, a rod rotatable in said block and extending adjacent said rail, said rod being provided with right and left hand threads, a pair of sliding blocks arranged one at each side of the shaft and cooperating with the rail and rod, whereby rotation of the rod simultaneously moves said sliding blocks toward and away from each other, a pair of bars detachably secured to said sliding blocks, and spacing collars longitudinally adjustable on said bars.

8. In a coil winding machine, the combination with a shaft, of means for driving said shaft, an arm carried by said shaft and projecting at opposite sides thereof, a sliding member carried on said arm at each side of the shaft, means for simultaneously moving said members toward and away from each other, plugs carried by said members and having limited rotation therein, said plugs being provided with eccentric apertures, bars positioned in said openings, spacing collars on said bars forming coil forms, the ends of said bars entering the plugs bein provided with annular grooves moved into and out of engagement with an abutment on the members by the relative rotation of the members and the plug, said movement functioning to lock and release the bar.

9. A construction containing the combination set forth in claim 8, in which the outer ends of the bars are supported by a removable brace.

JOSEPH E. PAPIN. HOMER H. BLACK. 

